Siphonic roof drain



FIG. 1 is a perspective view from above of the siphonic roof drain showing my new design thereof. The leaf guard is shown in broken lines for illustrative purposes only and forms no part of the claimed design.

FIG. 2 is a perspective view from above thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a first side elevational view thereof.

FIG. 6 is a second side elevational view thereof.

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line shown is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a siphonic roof drain, as shown and described. 